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Barends, R.; Hajenius, M.; Gao, J. R.; Klapwijk, T. M. |
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Title |
Current-induced vortex unbinding in bolometer mixers |
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Journal Article |
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2005 |
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Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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87 |
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263506 (1 to 3) |
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HEB mixer numerical model, HEB model, IV-curves, vortex-antivortex, Berezinskii–Kosterlitz–Thouless theory, diffusion cooling channel, diffusion channel, distributed HEB model, distributed model, self-heating effect, temperature profile |
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We present a description of the current-voltage characteristics of hot electron bolometers in terms of the current-dependent intrinsic resistive transition of NbN films. We find that, by including this current dependence, we can correctly predict the complete current-voltage characteristics, showing excellent agreement with measurements for both low and high bias and for small as well as large devices. It is assumed that the current dependence is due to vortex-antivortex unbinding as described in the Berezinskii–Kosterlitz–Thouless theory. The presented approach will be useful in guiding device optimization for noise and bandwidth. |
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604 |
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Author |
Terai, Hirotaka; Miki, Shigehito; Yamashita, Taro; Makise, Kazumasa; Wang, Zhen |
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Title |
Demonstration of single-flux-quantum readout operation for superconducting single-photon detectors |
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Journal Article |
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2010 |
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Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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97 |
Issue |
11 |
Pages |
3 |
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SSPD |
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A readout circuit using superconducting single-flux-quantum (SFQ) circuits has been developed to realize an independently addressable array of superconducting single-photon detectors (SSPDs). We tested the SFQ readout circuits by connecting with SSPDs. The error rates of readout circuits were below 10–5 for input signal amplitude of greater than 18.2 μA. Detection efficiencies (DEs) for single-photon incidents were measured both with and without the connection of a readout circuit. The observed DEs traced almost the same curves regardless of the connection of the readout circuit, except that the SSPD is likely to latch by connecting the readout circuit. |
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RPLAB @ gujma @ |
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654 |
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Karasik, B. S.; Il'in, K. S.; Pechen, E. V.; Krasnosvobodtsev, S. I. |
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Title |
Diffusion cooling mechanism in a hot-electron NbC microbolometer mixer |
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1996 |
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Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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Volume |
68 |
Issue |
16 |
Pages |
2285-2287 |
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Keywords |
HEB mixer, diffusion cooling channel, diffusion channel |
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0003-6951 |
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262 |
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Rodriguez-Morales, F.; Zannoni, R.; Nicholson, J.; Fischetti, M.; Yngvesson, K. S.; Appenzeller, J. |
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Direct and heterodyne detection of microwaves in a metallic single wall carbon nanotube |
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Journal Article |
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2006 |
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Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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89 |
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8 |
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083502 |
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carbon nanotube, GHz heterodyne detector, direct detector |
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0003-6951 |
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565 |
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Baselmans, J. J. A.; Baryshev, A.; Reker, S. F.; Hajenius, M.; Gao, J. R.; Klapwijk, T. M.; Vahtomin, Yu.; Maslennikov, S.; Antipov, S.; Voronov, B.; Gol'tsman, G. |
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Title |
Direct detection effect in small volume hot electron bolometer mixers |
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Journal Article |
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Year |
2005 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
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Volume |
86 |
Issue |
16 |
Pages |
163503 (1 to 3) |
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Keywords |
HEB, mixer, direct detection effect |
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We measure the direct detection effect in a small volume (0.15μm×1μm×3.5nm)(0.15μm×1μm×3.5nm) quasioptical NbN phonon cooled hot electronbolometermixer at 1.6THz1.6THz. We find that the small signal sensitivity of the receiver is underestimated by 35% due to the direct detection effect and that the optimal operating point is shifted to higher bias voltages when using calibration loads of 300K300K and 77K77K. Using a 200GHz200GHzbandpass filter at 4.2K4.2K the direct detection effect virtually disappears. This has important implications for the calibration procedure of these receivers in real telescope systems. |
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377 |
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Author |
Ganzevles, W. F. M.; Gao, J. R.; de Korte, P. A. J.; Klapwijk, T. M. |
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Title |
Direct response of microstrip line coupled Nb THz hot-electron bolometer mixers |
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Journal Article |
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Year |
2001 |
Publication |
Applied Physics Letters |
Abbreviated Journal |
Appl. Phys. Lett. |
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Volume |
79 |
Issue |
15 |
Pages |
2483-2485 |
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0003-6951 |
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311 |
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Baselmans, J. J. A.; Hajenius, M.; Gao, J. R.; Klapwijk, T. M.; de Korte, P. A. J.; Voronov, B.; Gol'tsman, G. |
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Title |
Doubling of sensitivity and bandwidth in phonon cooled hot electron bolometer mixers |
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Journal Article |
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2004 |
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Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
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Volume |
84 |
Issue |
11 |
Pages |
1958-1960 |
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Keywords |
NbN HEB mixers |
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We demonstrate that the performance of NbN lattice cooled hot electron bolometer mixers depends strongly on the interface quality between the bolometer and the contact structure. We show experimentally that both the receiver noise temperature and the gain bandwidth can be improved by more than a factor of 2 by cleaning the interface and adding an additional superconducting interlayer to the contact pad. Using this we obtain a double sideband receiver noise temperature TN,DSB=950 K
at 2.5 THz and 4.3 K, uncorrected for losses in the optics. At the same bias point, we obtain an IF gain bandwidth of 6 GHz. |
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352 |
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Bandurin, D. A.; Gayduchenko, I.; Cao, Y.; Moskotin, M.; Principi, A.; Grigorieva, I. V.; Goltsman, G.; Fedorov, G.; Svintsov, D. |
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Title |
Dual origin of room temperature sub-terahertz photoresponse in graphene field effect transistors |
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Journal Article |
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2018 |
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Appl. Phys. Lett. |
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Appl. Phys. Lett. |
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Volume |
112 |
Issue |
14 |
Pages |
141101 (1 to 5) |
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Keywords |
graphene field effect transistors, FET |
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Abstract |
Graphene is considered as a promising platform for detectors of high-frequency radiation up to the terahertz (THz) range due to its superior electron mobility. Previously, it has been shown that graphene field effect transistors (FETs) exhibit room temperature broadband photoresponse to incoming THz radiation, thanks to the thermoelectric and/or plasma wave rectification. Both effects exhibit similar functional dependences on the gate voltage, and therefore, it was difficult to disentangle these contributions in previous studies. In this letter, we report on combined experimental and theoretical studies of sub-THz response in graphene field-effect transistors analyzed at different temperatures. This temperature-dependent study allowed us to reveal the role of the photo-thermoelectric effect, p-n junction rectification, and plasmonic rectification in the sub-THz photoresponse of graphene FETs.
D.A.B. acknowledges the Leverhulme Trust for financial support. The work of D.S. was supported by Grant No. 16-19-10557 of the Russian Scientific Foundation (theoretical model). G.F., I.G., M.M., and G.G. acknowledge the Russian Science Foundation [Grant No. 14-19-01308 (MIET, cryostat upgrade) and Grant No. 17-72-30036, (MSPU, photoresponse measurements), the Ministry of Education and Science of the Russian Federation (Contract No. 14.B25.31.0007 (device fabrication) and Task No. 3.7328.2017/LS (NEP analyses)] and the Russian Foundation for Basic Research [Grant No. 15-02-07841 (device design)]. The authors are grateful to Professor M. S. Shur for helpful discussions. |
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0003-6951 |
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1309 |
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Author |
Mason, Whitney; Waterman, J. R. |
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Electrical and optical characteristics of two color mid wave HgCdTe infrared detectors |
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1999 |
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Applied Physics Letters |
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Appl. Phys. Lett. |
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74 |
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11 |
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1633-1635 |
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0003-6951 |
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RPLAB @ s @ |
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461 |
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Marsili, Francesco; Najafi, Faraz; Herder, Charles; Berggren, Karl K. |
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Electrothermal simulation of superconducting nanowire avalanche photodetectors |
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Journal Article |
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2011 |
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Applied Physics Letters |
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Appl. Phys. Lett. |
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Volume |
98 |
Issue |
9 |
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3 |
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SNAP |
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We developed an electrothermal model of NbN superconducting nanowire avalanche photodetectors (SNAPs) on sapphire substrates. SNAPs are single-photon detectors consisting of the parallel connection of N superconducting nanowires. We extrapolated the physical constants of the model from experimental data and we simulated the time evolution of the device resistance, temperature and current by solving two coupled electrical and thermal differential equations describing the nanowires. The predictions of the model were in good quantitative agreement with the experimental results. |
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RPLAB @ gujma @ |
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658 |
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